Display the source code in std/typecons.d from which this page was generated on github.

If you spot a problem with this page, click here to create a Bugzilla issue.

Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone.

Enum member `std.typecons.generateAssertTrap`

Predefined how-policies for AutoImplement. These templates are also used by BlackHole and WhiteHole, respectively.


						
				enum generateAssertTrap(C, func...)
				 = "throw new NotImplementedError(\"" ~ C.stringof ~ "." ~ __traits(identifier, func) ~ "\");";

Example

alias BlackHole(Base) = AutoImplement!(Base, generateEmptyFunction);

interface I
{
    int foo();
    string bar();
}

auto i = new BlackHole!I();
// generateEmptyFunction returns the default value of the return type without doing anything
writeln(i.foo); // 0
assert(i.bar is null);

Example

import std.exception : assertThrown;

alias WhiteHole(Base) = AutoImplement!(Base, generateAssertTrap);

interface I
{
    int foo();
    string bar();
}

auto i = new WhiteHole!I();
// generateAssertTrap throws an exception for every unimplemented function of the interface
assertThrown!NotImplementedError(i.foo);
assertThrown!NotImplementedError(i.bar);

Authors

Andrei Alexandrescu, Bartosz Milewski, Don Clugston, Shin Fujishiro, Kenji Hara

License

Boost License 1.0.

API Documentation

Enum member std.typecons.generateAssertTrap

Example

Example

Authors

License

Enum member `std.typecons.generateAssertTrap`